1. 1st divide to half take the heavier out . }+ b& D9 O# W L( \. y( n+ |os.tvboxnow.com2. 2nd take 4 balls out of 5 divide 2 groups to get the heavier out. (if is equal thn the remain is the one u looking for) ' Y( _7 x- e/ t" y( }公仔箱論壇3. Same method if is not equal on 2nd try.